Floor finishing machine



sept, 19, 1933.

c. EfWooDs l,927,225

FLOOR FINISHING MACHINE Filed April 1:5, 1927 4 sheets-sheet 1 ,52 f2@ I l l Q s //IW d 51 4T? 23 5I H" n/ 2.5

l), l Off y A E Jafa/2z .5 v 16 l1 I l v 6 20 7 P20 l d /6 L 46 K f 45:55 'g` 465.5 .5

V juve/vzw@ y 6 ClznonE. mods, .57/ f// f l .55 -54 Sepa a9, 1933. C, E www 1,927,225

lFLOOR FINISHING MACHINE v Filed`April 13, 1927 4 Sheets-Sheet 2 y 7Min/1E. modi,

QM/MW Sept. 19, 1933., Q E, WOODS 199232225 FLOOR FINISHING MACHINE .Fi1ed`April 13, 1927 4 Sheets-Sheet 3 Sept. 19, 1933. Q E WOODS 1,927,225

FLOOR FINI SHING MACHINE FilecLApril v1:5, 1927 4 Sheets-Sheet 4 IIH /MM ad um i153. 15; .wfg-14 types of coatings to surfaces in general.

Patented Sept. 19, 1933 UNITED STATES PATENT;- OFFICE 1,927,225 FLooa FimsniNG Macnma Woods, deceased, assignor to individually, Yeadon, Pa.

Julia E. Woods,

Application April 13, 1927. Serial No. 183,273

24 Claims.

The object of the invention is to provide improvements in devices for finishing various surfaces, particularly the waxing, polishing and bufling of floors, but also for applying different However, in the following specification and appended claims the term waxing device (unless otherwise specified) is to be understood as implying and including broadly a device for carrying on not only the waxing, but the polishing, bumng, painting, staining, etc. of any surface for which the invention is adapted.

Another object is to provide a device of this character employing a plurality of elements, such as brushes or/th'e like, rotatable in opposite directions in a common plane, so that when in operation the device is tilted into a position such that the elements are not in uniform co-operation with the surface being treated, but cooperate with the surface substantially along a tangent to the said elements, the device is under no tendency to move in either direction along such tangent, but remains in a fixed position until and as moved in any desired direction from such position.

A further object is to provide in a device of this character the combination of an integral casing, a motor within said casing and provided with a normally horizontal driving shaft, a pair of shafts adapted to rotatably support brushing, polishing or buing elements and positioned at an angle with respect to said driving shaft, said last-named shafts being driven by said driving shaft through a suitable medium such as wormgearing, with a reservoir, means to lead liquid wax or other finishing material from said reservoir to said elements, and means to automatically control the flow of s uch material.

Still another and more specific object is to provide various means or reservoirs for retaining the finishing material until distributed over the surface by the rotatable elements, one type of reservoir comprising a recess within the handle of the device, and another comprising a support adapted to cooperate with the normal open end of a can or similar container in inverted position, so that the contents of such container can flow by way of a suitable conduit to the rotatable applicator elements, the flow of the material in either case being controlled by a suitable valve arrangement.

A still further object is to provide a structure in which a container of finishing material is adapted tobe secured in inverted position upon the device, the driven or supporting shaft of each rotatable element being provided with an axial bore extending upwardly thereinto, a diagonal bore extending from said first bore outwardly through the side of said shaft and connecting with a receiving chamber within the casing, and a channel connecting the inverted container with said chamber, whereby material from said container is adapted to flow into the interior of said shaft, and a combined nozzle and automatically actuated valve to direct and control the flow of the material in accordance with the said driven shafts.

Other objects are to provide several improved nozzles for distributing the finishing material to a given surface, to provide special arrangement and relationship of the axial and diagonal bores within the driven shafts, to provide improvements in the mounting of the rotatable parts within the integral casing, to provide an improved mechanism for admitting the finishing material to the nozzle from a stationary reservoir towards and into the bore in each driven` shaft, and to provide other improved details fully brought out in the following description, when read in conjunction with the accompanying drawings, in which Fig. 1 is a front elevation of 80 one embodiment of the invention showing the upper portion thereof in section; Fig. 2 is a vertical section on the line 2 2 of Fig. 1; Fig. 3 is a horizontal section on the line 3 3 of Fig.

1; Fig. 4 is an end elevation of this form of the 85 device showing the upper portion including the handle in section, the handle containing a liquid reservoir; Fig. 5 is a. sectional view of the handle portion of the device showing a modified form of the liquid reservoir; Fig. 6 is a horizontal sec- 90 tion on the line 6 6 of Fig. 5; Fig. 7 is a front elevation of a modified form of the device; Fig. 8 is a vertical section on the line 8 8 of Fig. 7; Fig. 9 is a fragmentary elevational view of a portion of the rotatable shaft shown in Fig. 95

8; Fig. 10 is a horizontal section on the line 10 10 of Fig. 9; and Figs. 11, 12, 13 and 14 are vertical diametrical sections through the rotatable brush members and in each case showing a portion of the upwardly extending rotatable shaft upon which said members are removablymounted.

Referring to Figs. 1, 2, 3 and 4, a preferably electrically driven motor is provided, the same comprising a shaft 1, having a commutator 2,

and an armature 3, which rotates within a circumferentially positioned set of field magnets 4, mounted upon the inner surface of the motor portion 5 of a casing, which also comprises a substantially .plane portion 6, from which the motor portion extends upwardly, said plane secthe rotation of 65 tion terminating laterally in all directions in a peripherally extending downwardly projecting skirt or flange 7. One end of the motor portion 5 of said casing is spanned by a closed end section 8, from which extends axially with said armature an offset portion 9, in which one end portion 10 of the shaft 1 is Journalled and provided wlth spiral gear teeth.

'Ihe oilset portion 9 upon one lateral side is also Joined to the end closure portion 8 of the casing through the medium of a substantially circularl portion 11 for a purpose hereinafter described.

Upon the opposite end, the otherwise open end of the motor portion 5 of the casing is normally closed by means of a head section 12, which carriesthe usual removable adjustably positioned brushes 13, which maintain a sliding electrical contact with the armature 3.

The head section 12, corresponding to the oppositely positioned end closure section 8, is likewise positioned with an offset portion 14 similar to the corresponding portion 9 and in which is journalled the splrally toothed opposite end portion 15 of the shaft 1, said offset portion 14 being further connected to the head 12 by means of a substantially circular section 16, similar in shape to the corresponding circular section 11 and also for a purpose hereinafter described. In this construction, it is to be noted that with the exception of the integral head 12 with its offset and circular portions 14 and 16, which are removable for the obvious purpose of inserting the armature in its operative position, the entire casing composed of the motor Section5, end section 8, offset portion 9, cylindrical portion 11, plane portion 6 and depending flange 7 comprises an integral casing which has been so designed as to entail a low cost of manufacture.

Pivotally secured to the opposite ends of the casing by screwsor bolts 20, and immediately above the plane portion 6 of said casing, are the parallel portions 21 of an operating handle casting, comprising a head l22 joined to the parallel arms 21 by oppositely extending Shanks 23, and having a centrally positioned axial recess 24, into which is secured one end portion 25 of a tubular handle 26, the upper portion of which is shown in Fig. 4. At any suitable altitude, the interior of said handle is spanned by a partition 27, beneath which one side of said handle is apertured at 28, said aperture communicating with a diagonally outwardly and inwardly extending intake or filling tube 29, normally closed by means of a removable plug or cap 30, having a relatively small air vent 31.

The head 22l is furthermore provided with an axial bore 32, extending normally downwardly from the recess 24 and communicating with diverging `channels 33, the continuity of said bore being interrupted at will by means of a valve 34, extending into and partially through said .head, and itself provided with a diametrically extending bore 35, which is either partially or wholly in alignment with the bore 32 as illustrated in Figs. 1 and 4, or by rotating said valve substantially degrees, the latter serves to block the bore 32 and prevent the flow of a liquid from the reservoir in the handle thereabove towards and through the diverging channels 33.

In the operation of the device upon a floor or similar surface, it is manually moved to and fro over such surface by means of the handle 26, and the arms 21-23 oscillate upon the pivots 20 with respect to the casing hereinbefore described. However. when not being used, the handle is raised into an upwardly extending position, such as shown in Fig. 4, and ,is yieldingly retained in such inoperative position by means of a pin 36, reciprocatable within an axial bore 37 in the lower portion ofthe head 22, engaging within a recess 38 in the upper portion of the motor housing 5.

A pin4 39 extends transversely.

through said first-named pin 36 and through lon' gitudinally extending parallel slots 40 in the upright position as long as desired, but that upon manually oscillating said handle, either forwardly or rearwardly, the walls of the recess offer but slight opposition to the upward movement of the pin and thereby to the disengagement of said pin with said recess.

The circular portions 11 and 16 of the casing are provided internally at theirlower portions with suitable ball-bearings 41 and at an upper portion with bearings 42, between and through which bearings extends a shaft 43, having a bore 44, and carrying upon its upper end portion a worm-gear 45 in constant mesh with the worm teeth of the adjacent end portion l0 of the shaft 1. The bore 44 is enlarged at 46 in the upper end of the shaft 43 and receives in rotatable engagement with the lateral walls thereof the downwardly extending terminal portion 47 of a nipple, having a bore 48 and extending through a removable cap 49, which normally closes the uppermost and otherwise open end of the circular portion 11 or 16 of the casing as the case may be.

The uppermost end of each of said nipples is connected by a flexible tube 50 with a nipple 51, secured in each of the respective diverging channels 33 in the handle-supporting head 22. Referring again to the nipple 47, it will be noted that it is held in stationary relation with the cap 49 in any suitable manner, as for instance by means of the surrounding nut 52, in engagement with the externally threaded surface of said nipple, and also that its lower end portion, in addition to extending into the bore 44-46,is preferably in substantially liquid-tight engagement with the shaft 43 by means of suitably retained packing 53.

The lower end portion of the shaft 43 comprises an externally threaded head 54, extending below the level of the plane portion 6 of the casing and is normally provided with a removable member 55, having a flange 56, to which an annular doughnut-shaped block 57 is secured and which block in turn supports bristles 58, or any other desired type or form of means for engaging and finishing a floor or other surface as hereinafter described.

The member 55 is furthermore provided with a hollow downwardly extending portion 59, the lowermost wall of which is preferably curved, or at least slants downwardly as it progresses radially inwardly, and is provided with one or more restricted bores 60, forming nozzles.

Within the hollow portion 59 there are one or more balls or other forms of valve members 61, adapted, when the shaft 43 is stationary, to lbe seated within a recess which leads to, and in which terminate upwardly, the respective nozzle bores 60. These valve members 61 are separated each bore 60 from its axis of rotation is greaterv from one another by radially extending walls 62, carried by the lower portion 59, and as the shaft 43 which supports this structure rotates at its usual speed, each of the valve members, by virtue of centrifugal force, is thrown radially out- Wardly towards the outer circumferential limits of the Alowermost recess portion of the surrounding member.

With the several parts in the position thus described, and with a waxing or other suitable liquid in the reservoir in the lower portion of the handle 26, beneath the partition 27, the valve 34 is oscillated into the position shown, whereby its bore 35 is in alignment with the bore 32 of the head 22, so that liquid from said reservoir is free to' flow into and through the downwardly diverging channels 33, thence through the iiexible tubular connections 50, and into the nipple 47, whence the liquid is free to flow downwardly through the bore 44, in each of the shafts 43, and into the recessed portion of the member 55.

If the motor armature 3 and consequently the shaft 1 are stationary, each of the shafts 43 is likewise stationary, and the valve members 61, blocking the nozzle bores 60, prevent the liquid Afrom flowing therethrough. However, as the motor starts to rotate and drives the shafts 43 in oppositedirections, the valve members 61 are automatically propelled under centrifugal force radially outwardly and the same force acting upon the liquid within the member 55-59 passes through said nozzle bores and is thrown against and into the bristles of the brush 58, whence the liquid is applied by said brush to the floor or other surface being finished.

It will be noted that the radial distance of than the radius of the bore 44 in each shaft 43 so that centrifugal force always acts positively upon the liquid within the member 55-59. Thereafter, when the motor ceases to rotate and the shafts 43 likewise stop, the valve members 61 are again free to settle in their respective positions in which they block the flow of further liquid through said nozzles until the rotation of the motor is again resumed.

Referring now to Figs. 5 and 6, instead 'of th handle 26 containing the liquid reservoir, the head 22 is provided with a laterally extending boss 65, having a bore 66, in which is secured one end of a channel angle coupling 67, the opposite end of which is directed upwardly and is provided internally with a substantially plane flange 68, surrounded by an internally threaded cylindrical flange 69, adapted to receive the threaded neck 70 of a can or other form of container 71, containing the liquid which it is desired to apply to the surface being finished or otherwise being treated.

In such case, the neck of the container is adapted to be screwed rmly and rests directly against a gasket 72, upon the inner Wall of the flange 68, said container at its upper portion being yieldingly gripped by the laterally yielding arms 73 of a retainer yoke, the' central portion of which is secured at 74 to the handle 26. With this construction, the can or other container in which the finishing liquid is sold becomes the reservoir from which it' is lead toward and is distributed upon the surface being treated, its iiow through the handle-supporting head 22 being regulated by means of the valve 34, as hereinbefore described.

.Referring now to Figs. 7 and 8, a modified construction is shown wherein the plane portion 6 of the casing is provided with an upwardly extending boss 75, having an upper open end 76, adapted toremovably secure the liquid can or container 77 in `any suitable manner and provided with a downwardly extending bore 78, leading'into oppositely directed slightly downwardly diverging bores 79, which upon passing through the sidesof said boss, communicate by means of any suitable form of tubular connection 80 with an aperture 81, leading through the lower portion of the .wall of the respective circular portions 11 and 16 of the casing.

However, in this modified construction, a ballbearing 82 is provided at such height that the aperture 8l is well below said bearing, but is above an annular member 83 within said casing, surrounding the shaft 84 in spaced relation therewith, but supporting vertical spaced removable gaskets 85, which contact directly and in sliding engagement with the outer surface of said shaft.

The shaft itself is provided with a bore 86, extending axially upwardly into the same from the lower end thereof, but not necessarily continuing through the upper end of the surrounding shaft as in the case of the form illustrated in Fig. 2. However, the shaft 84 is provided with a circumferentiallyextending groove 87 from which lead converging downwardly circumferentially spaced bores 88, which open inwardly into the bore 86, each of said diagonal bores preferably extending inwardly in lines which are substantially tangential with the axial bore, as shown in Fig. 10.

With this construction, and the other parts of the device being the same as hereinbefore described, except that the upper part of the circular portions 1l and 16 of the casing are closed by irnperforate plugs or caps 89, the liquid from the reservoir 77 is adapted to iiow through the oppositely directed connections 80 into the circular casing portions 11 and 16, between the ball-bearings 82 and the annular member 83, and thence into the handle groove 87 in each of the shafts 84, whence as said shaft rotates, the liquid flows downwardly through the converging bores 88, into the axial bore 86 of each shaft and past the valve members 61, as hereinbefore described, the natural tendency of the rotating shaft to force the liquid reversely upwardly and out of the bores 88, instead of downwardly therethrough, being offset by aligning said last-named bores tangentially as above described.

Referring now to Figs. 11, 12, 13 and 14, in each there is shown the 'annular doughnutyshaped block 89, surrounding an enlarged central bore 90, and provided with depending brush bristles or their equivalent 91. It is to be understood, however, that this structure merely represents any suitable means for applying liquid finishing material to a given surface in a satisfactory l upper end provided with a flange 98, which engages the inner surface of the cap 92 surrounding the aperture 95 and prevents it from passing therethrough. Said cap together with the surrounding block and bristles attached thereto as a unit is removably mounted upon the lower end portion of arr upwardly extending auxiliary or counter shaft 99, provided .with a boreI 100 and representing either the bored shaft 43 or 84 in the respective Figs. 2 and 8. 'Ihe type of distributing member' here shown does not include a valve and the flow of liquid thereto must be controlled by such a means as the valve 34, shown in Figs.

In Fig. 12, the unit finishing member 89, 90 and 91 is provided with an internally threaded annular sleeve 101, into which is removably secured the free end portion. of the shaft 99, while into the lower free end of the bore 100 in said closed, when the shaft 99 is stationary, by a ball` or other valve member 106, the center of which,

however, is out of alignment with the axis of said shaft and distributing member and upon the commencement o f their rotation at normal speed, said valve member is impelled by centrifugal force into the radially outermost portion Aof material passes and is directed by centrifugall force into the bristle or similar structlres 91.

In Fig. 14, the bored shaft and unit block and brush structure are substantially the same as hereinbefore described, except that the lower portion of the shaft itself is provided with an enlarged recess 110, opening downwardly and substantially closed by a wall 111, which slopes from its peripheral contact with the surrounding wall of said shaft towards an aperture 112 which is slightly spaced radially from the axis of rotation of said shaft and is normally closed by a ball or similar valve member 113 when the shaft is stationary, but which valve member under the impulse of centrifugal force is impelled radially outwardly away from and thereby opens the aperture 112, so that the liquid finishing material can freely pass therefrom into the brush structure as before described.

No matter 'what type of applicator brush is used in the device, in order to prevent lines of polish appearing upon the fioor or other surface between the brushes, as the device is propelled towards and away from the operator, the bristles of the brush elements areA made to intermesh slightly, as lshown in Figs. 1 and 7. This feature of the device, which is particularly advantageous, is made possible by the rotation of the brush elements at the same speed and in opposite directions vin substantially the same plane, by means of the vertical shafts 43 and 84 being connected together by the motor-driven shaft 1 and the intervening gearing.

Having/thus described my invention, what I claim and desire to protect by Letters Patent of the United States is:

1. A surface finishing device, comprising a motor having a horizontal main shaft, a vertical auxiliary shaft, gearing between said shafts, a surface finishing member carried by said auxiliary shaft, means to convey a liquid-to said member, a nozzle adjacent to said member, andan automatic valve operative to control the flow of liquid during rotation and to stop such fiow thru the nozzle at the cessation of rotation of said member in any position.

2. A surface finishing device, comprising a motor having a horizontal main shaft, a verticalv auxiliary shaft, Agearing between said shafts, a surface finishing member carried by said auxiliary shaft, a reservoir, means to convey a liquid from said reservoir to said member, a nozzle adjacent to saidl member, andan automatic valve operative by centrifugal action and by gravity to control the ow of liquid during rotation and-to stop such flow at the cessation of rotation of said member.

3. In a surface finishing device, the combination of a casing, an upwardly extending shaft within` said casing and having a bore, a reservoir carried by said casing, means to convey a liquid from said reservoir to the exterior of said shaft.

whereby said liquid passes into and through said 1 bore and is discharged from a lower end portion of said shaft, and a centrifugally operated valve carried by said shaft, to control the iiow of liquid therefrom.

4. In a Surface enishmg device, the comtimf carried by said casing, means to convey a liquid from said reservoir to the exterior of said shaft, whereby said liquid passes into and through said bore and is discharged from a lower end portion of said shaft, a hollow terminal member carried by said shaft and into which said bore discharges, a nozzle bore in a lower wall of said member, and a centrifugally actuated valve member within said first member and operative to control the flow of liquid from said resevoir to and from said nozzle.

5. In a surface finishing device, the combination of a casing, an upwardly extending shaft within s'aid casing and having a bore, a reservoir` carried by said casing, means to convey a liquid from said reservoir to the exterior of said shaft, whereby said liquid passes into and through said bore and is discharged from a lower end portion of said shaft, a hollow terminal member carried by said shaft and-into which said bore discharges, a plurality of nozzle bores in a lower wall of said member, centrifugally actuated valve members within said rst member and operative to control the iiow of liquid from said reservoir to and from said nozzles, and means to separate said valve members and operative as the shaft ceases rotation to redirect each of said last-named members to its respective nozzle.

6. In a surface finishing device, the combination of a casing, an upwardly extending bored shaft rotatable therein, spaced bearings for said shaft within said casing providing an intervening annular chamber, a reservoir carried by said casing, and fluid-conveyingv means connecting said reservoir with said chamber. l

'7. In a surface finishing device, the combination of a casing, an upwardly extending bored shaft rotatable therein, spaced bearings for said shaft within said casing providing an intervening annular chamber, a reservoir carried bysaid casing, Huid-conveying means connecting said reservoir with said chamber, and a centrifugally operated valve carried by said shaft, to control the flow of liquid therefrom.

8. In a surface finishing device, the combination of a casing, an upwardly extending bored shaft rotatable therein, spaced bearings for said shaft within said casing providing an intervening annular chamber, a reservoir carried by said casing, fluid-conveying means. connecting said reservoir with said chamber, a hollow terminal member carried by said shaft andinto which said bore discharges, a nozzle bore in a lower wall of said member, and a centrifugally actuated valve member within said first member and operative to control the flow of liquid from said reservoir to and from said nozzle.

9. In a surface finishing device, the combination of a casing, an upwardly extending bored shaft rotatable therein, spaced bearing for said shaft within saidv casing providing an intervening annular chamber, a reservoir carried by said casing, fluid-conveying means connecting said reservoir with said chamber, a hollow terminal member carried by said shaft and into which said bore discharges, a plurality of nozzle bores in a lower wall of said member, centrifugally actuated valve members within said first member and operative to control the flow of liquid from said reservoir to and from said nozzles, and means to separate said valve members and operative as the shaft ceases rotation to redirect each of said last-named members to its respective nozzle.

10. In a surface finishing device, the combination of a casing, an upwardly extending shaft rotatable within said casing, a finishing member carried by said shaft to rotate therewith, a receptacle carried by said casing and adapted to removably receive and support a liquid container as a reservoir, a bore in said shaft extending generally downwardly therethrough, a channel adapted to convey liquid from said reservoir into the bore of said shaft for discharge therefrom, and a centrifugally actuated valve rotatable with said shaft to control the flow of liquid therefrom.

11. The combination of a bored shaft and a finishing member, with a hollow coupling therebetween, and downwardly closed by a wall having an aperture, and a valve member normally closing said aperture and operative under the influence of centrifugal force when said shaft is rotated to open said aperture.

12. The combination of a rotatable bored shaft, having a recessed end portion, a wall substantially closing said end portion and provided withan aperture eccentric with the axis of rotation, and a valve member within said recess and operative to close said aperture while said shaft `is stationary, and to open said aperture when said shaft revolves.

13. A surface finishing device, comprising a plurality of brush elements the bristles of which intermesh and which rotate in opposite directions in substantially parallel planes, a motor-driven shaft, auxiliary shafts geared to said first shaft and supporting said brush elements, a reservoir carried by said device, a nozzle corresponding to each of said elements, a channel to convey liquid Ifinishing material from said reservoir to the respective nozzles, and means movable synchronously with each of said supporting shafts to vautomatically regulate the flow of such material to each of said nozzles independently of each other.

14. In a surface finishing device, the combination of a casing, a motor driven member, an element within said casing having a bore and so associated with said member as to move in response to movement thereof, a reservoir carried by said casing, a conduit to convey liquid from said reservoir to said boreA whence it is discharged, and means for centrifugally discharging liquid from said bore in accordance with the movement of said member.

15. In a surface flnishing device, the combination of a motor housing, an upwardly extending shaft rotatable within said motor housing, a flnishing member carried by vsaid shaft to rotate therewith, a support carried by said housing and adapted to receive and support a liquid container as a reservoir, abore within said housing extending generally downwardly therethrough, a channel adapted to convey liquid froml .said reservoir into said bore for discharge therefrom, and means to centrifugally discharge liquid in accordance with the rotation of said shaft.

16. In a floor waxer, a pair of circular rotary brushes, a motor, direct geared driving connections between the motor and the two brushes, a one-piece body casting having afloor or base portion overlying the two vbrushes and substantially coextensive with their combined oor engaging area, an integral housing portion completely surrounding the motor except for one armature end and also providing bearings for vthe brushes, and a one-piece head casting adapted to complete a housing with the body; casting entirely surrounding the motor and all gearing.

17. The device of claim 16 in which a yoked handle is pivoted tothe body casting at one side and to the head casting at the other side, Ithe brush axes being equispaced from the yoke ends, and the motor being centrally positioned with respect to the yoke ends, said yoke being of] such size as to clear the housing.

18. A two-brush floor waxer including a housing substantially symmetrical front to rear and side to side, a circular rotary brush at each side, the. axes of rotation of the brushes lying in a central vertical plane, a yoked handle pivoted to the housing to turn about an axis in said plane, a motor for driving the two brushes located within the housing with its axis parallel to saidl plane, and a liquid reservoir carried by the housing on the opposite side of said plane to bring the center of gravity of the device in said plane and centrally of the two brushes, the latter furnishing the sole support of the device on the floor.

19. In a, floor treating device, a one-piece casting, a motor mounted in Vsaid casting with its axis horizontal, a bored vertical shaft having upper and lower bearings in said casting, gearing within said housing connecting said motor and said shaft, means for discharging uidthru said bore, and automatic valve means symmetrically spaced about the shaft axis for opening when the shaft revolves and for closing when the shaft is not rotating.

20. In a two-brush waxer and polisher, a housing having a horizontal floor peripherally bounded by a downturned skirt, arcuate at each side, a pair of rotary members extending thru said floor with their axes in the center of the arcs of the flange, and brushing elements extending conically beyond theplan margins of the skirt at front, back, and both sides, and driving mechanism carried by the housing to rotate the members.

21. In a surface finishing machine, a revolving finishing element, a shaft for supporting and revolving said element and having an axial bore terminating adjacent said element for conveying finishing material to the surface during the finishing process, a nozzle at the terminal of said bore joining said bore at an angle whereby when and being ytangential thereto whereby turning.

of said shaft forces finishing material from said channel to said axial bore by centrifugal action.

24. In a iioor waxer, a laterally elongated casing, a plurality of polishing members having their axes in a lateral vertical plane substantially centrally of the casing, a motor on the casing with its axes horizontal, parallel to, and in front of said plane, a laterally .elongated wax reservoir on the casing at substantially the same level as the motor, parallel thereto, and on the rear side of said plane, and means operatively connecting the motor and the polishing members.

CLINTON E. WOODS.

ira I lesA l 

